0. Aligent Technologies_Fundamentals of Signal Analysis Series_Application Note 1405-1.pdf

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1、FundamentalsofSignalAnalysisSeriesIntroductiontoTime,FrequencyandModalDomainsApplicationNote1405-1TableofContentsIntroduction...............................................................3Section1:TheTimeDomain.................................................4Se

2、ction2:TheFrequencyDomain............................................6Section3:InstrumentationfortheFrequencyDomain.........................16Section4:TheModalDomain..............................................20Section5:InstrumentationfortheModalDomain.........

3、...................24Summary.................................................................26Glossary..................................................................272IntroductionTheanalysisofelectricalsignalsInthisapplicationnoteweisafundamentalconcernforin

4、troducetheconceptsofthemanyengineersandscientists.time,frequencyandmodalEveniftheimmediateproblemdomains.Thesethreewaysisnotelectrical,thebasicoflookingataproblemareparametersofinterestareofteninterchangeable;thatis,nochangedintoelectricalsignalsbyinformationislo

5、stinchangingmeansoftransducers.Commonfromonedomaintoanother.transducersincludeaccelerometersBychangingperspective,theandloadcellsinmechanicalwork,solutiontodifficultproblemsEEGelectrodesandbloodpressurecanoftenbecomequiteclear.probesinbiologyandmedicine,Afterdeve

6、lopingtheconceptsofandpHandconductivityprobeseachdomain,wewillintroduceinchemistry.Therewardsforthetypesofinstrumentationtransformingphysicalparametersavailable.Themeritsofeachtoelectricalsignalsaregreat,asgenericinstrumenttypearemanyinstrumentsareavailablediscus

7、sedtogiveyouanfortheanalysisofelectricalappreciationoftheadvantagessignals.Thepowerfulmeasure-anddisadvantagesofeachmentandanalysiscapabilitiesapproach.oftheseinstrumentscanleadtorapidunderstandingofthesystemunderstudy.Youcanlookatelectricalsignalsfromseveraldiff

8、erentperspectives,andeachofthesedifferentwaysoflookingataproblemoftenlendsitsownuniqueinsights.3Section1:TheTimeDomainThetraditionalwayofobservingcommonlyavail